Bitcoin miner hosting company HashPlex has completed a $400,000 seed round led by Barry Silbert of SecondMarket and senior Facebook engineer Jason Prado. Bernie Rihn, co-founder of HashPlex, said the funding would enable his company to complete its 1MW HashCenter in central Washington, east of Wenatchee, and continue developing custom hardware and software. “HashPlex needs to move quickly while maintaining a level of great service, and this investment will help us continue to do so,” he said.